LCD indication for fault information | Liebert UPS System guide

Chapter 7 Troubleshooting

7.4 LCD indication for fault information

The LCD on the UPS displays the fault information of Table 7-1 and Table 7-2. The user should locate and analyze the fault according to the tables and feedback the fault information to our service engineers.

Table 7-1

Fault information

No.1

Fault description

Reason

Actions to be taken

1

Communication of

Communication between monitoring

Notify the service engineer for repairing

inverter fails

unit and inverter fails

2

Communication of

Communication between monitoring

Notify the service engineer for repairing

rectifier fails

unit and rectifier fails

3

Ambient over-

over-temperature of UPS room

Check the ventilation of UPS room

temperature

4

Environment

Environment

parameter

channel

1

Check the devices relating to the channel

parameter 1 abnormal

has alarm

5

Environment

Environment

parameter

channel

2

Check the devices relating to the channel

parameter 2 abnormal

has alarm

6

Environment

Environment

parameter

channel

3

Check the devices relating to the channel

parameter 3 abnormal

has alarm

7

Environment

12V environment parameter channel

Check the devices relating to the channel

parameter abnormal

has alarm

8

Rectifier

input

voltage

Line-to-neutral

voltage

of

rectifier

Check

the

line-to-neutral

voltage

abnormal

exceeds normal operation range

amplitude of rectifier

Rectifier

input

under-

Line-to-neutral voltage of rectifier

Check

the

line-to-neutral

voltage

9

lower than

305V, but

higher

than

voltage

208V

amplitude of rectifier

Rectifier’s input

Rectifier

frequency exceeds

the

Check

the

rectifier’s

input

voltage

10

voltage frequency is

normal range

frequency

abnormal

11

Input fuse blows

Rectifier input fuse blows up

Notify the service dept for repairing

12

Input transformer over

Temperature of input transformer is

Check

the

ambient temperature

and

temperature

too high

ventilation

13

Input phase

rotation

Rectifier’s

input

phase

rotation

is

Notify

the UPS service

engineer,

check

reverse

reverse

the wiring of rectifier input cables

14

Input softstart fails

Input softstart fails

Notify the service dept for repairing

83

Image 89

Liebert UPS System user manual LCD indication for fault information

Contents

Liebert iTRUST UPS System Page Contents Page Error! Bookmark not defined Page Basics Configuration Main circuit of UPS Operation Theory Components of 20/30kVA UPS Structure and Layout Operation Modes Normal mode Bypass Mode Battery Mode Maintenance Mode ECO Mode Dual Input Mode United Power ModeParallel Operation mode Functional Parameters SpecificationsBasic Functions Parameters of Liebert iTrust UPS are given in -1 LCD+LED Electrical Parameters Page Unpacking DimensionsEnvironmental Conditions Fixing holes 40/60kVA UPS Outline Dimension Positioning of UPS TransportationHoisting the UPS Transportatio with Forklift Fixed cabinet position on a base Fixed position without a base Install the UPS on a support rack Cable Access UPS top cable output Ventilation Layout of Cabinet One UPS cabinet and one battery cabinetOne UPS cabinet and several battery cabinets 12 Layout Page Calculation of current of power cables Selection of power cablesSelection of cables Current carrying capacity of cables Power cables Selection of signal cablesCable connections Cabling layout 20/30kVA UPS bottom cable output Cable routing Cable connection Power cable connection of One branch utility source Earthing Method Signal cableRouting the signal cable Connection method Layout of signal cables of 20/30/40/60kVA UPS RS232 Serial Port Connection of modem 12 RS485 Port Connection of input and output voltage free contacts BLV-C Connector Name of contacts Board name Input/output Connection of Single UPS System Battery Temperature detection cablePage Startup Startup ProcedureExplanation of Circuit Breakers Function Setup Menu Setting the functions UL33-0400L 125030 Inv. On Units Out Modem RS232 Functional checks Check the function of the display panel Switching between operation mode Commissioning of UPS Layout of Display Panel Display panel Function Dividing LED Indication Functional Keys LCD and Menu Keys Alarm BuzzerMenu key LCD UL33-0400L 123020 Opening display Displayed informationMain Menu Display UPS Basic Information Display Menu Menu Keys Display Window Shift keyF1 display Information of main menu UL33-0400L Local Batt. Temp. C 23.2 System Batt. Boost Charging Chinese Language setup Function Setup Time setup Address setup UL33-0400L 125030 Inv. On Units Out 27 Setup the date 29 Setup the date Manual battery self-test History log Contrast adjustment 33 History log Background communication setup Modem RS232 Call-back number setup Battery low Prompt window 39 Call-back number setup 12.5 UL33-0400L 123020 Inv. On Units Mains Power 44 Load capacity exceed that of single module UPS system Events and State Information UPS Events UPS states State Reason Start from utility Setup proceduresStart up Shutdown in bypass mode Shutdown in normal modeShutdown in battery mode Shutdown in ECO mode Transferring between operation modes Emergency shutdown and recoveryShutdown in United powering mode Mute Fault clear Monitoring system Monitoring parallel operation system Monitoring single UPS Input contacts Input and output contactsOutput dry contact Temperature measuring MaintenanceDaily maintenance Daily checking Annual checking Weekly checking Other checking Battery maintenanceBattery storage Auto battery self test Manual battery self-test Shutdown maintenance LED indicator UPS system troubleshootingProcedures Basics LED indicator of lightning protection device Buzzer alarm LCD indication for fault information No.1 Fault description Reason Actions to be taken No.1 Fault description Reason Actions to be taken UPS Conditions for parallel operation Features of parallel systemsSystem Introduction Paralleling for Redundancy of more than two units Theory of OperationParallel System consisting of two units Series Hot-Standby parallel system Paralleling for Capacity Expansion Operation modes Series backup mode Cabinet installation InstallationParallel operation system with two UPS units Parallel operation system with multi UPS units Signal cables Electrical installationPower cables Start up of Parallel Operation System External Power Distribution Switch on the Parallel System Using the Parallel Operation System Shutdown the Parallel Operation System Start from battery Normal mode to battery mode Shutdown in united operation mode Normal mode to bypass mode Repairing the failed UPS unit in parallel operation systemBypass mode to normal mode Battery mode to normal mode Emergency shutdown Fault and Fault Process Methods UPS Capacity selection Battery External Dimensions Battery cabinet Wiring of the batteries Installation of battery cabinet Battery layout inside battery cabinet 105 Product structure and ports Technical featuresSnmp Card and the Software Modem Network Software Level C Lightning Protection System SPD24Z Temperature sensor TMP12Z Introduction of SPD24Z Installation procedures of SPD24Z User Maintenance Using and MaintenanceBypass Isolation Transformer Ambient condition Abnormal Fault Handling Service after Sales Service after Sales Chapter Service after Sales Warranty